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Related-party Transactions (Details Textual) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Related Party Transaction [Line Items]      
Operating Leases Rent Expense, Net, Related Party $ 373 $ 828 $ 705
Related Parties Amount in Cost of Sales 8 31 348
Accounts Payable, Related Parties   0  
Other Accrued Liabilities [Member]
     
Related Party Transaction [Line Items]      
Operating Leases, Future Minimum Payments Due   $ 206  
Unrelated Third Parties [Member] | Maximum [Member]
     
Related Party Transaction [Line Items]      
Line Of Credit Facility, Credit Terms 150 days    
Unrelated Third Parties [Member] | Minimum [Member]
     
Related Party Transaction [Line Items]      
Line Of Credit Facility, Credit Terms 15 days    
INX and its affiliates [Member] | Maximum [Member]
     
Related Party Transaction [Line Items]      
Line Of Credit Facility, Credit Terms 120 days    
INX and its affiliates [Member] | Minimum [Member]
     
Related Party Transaction [Line Items]      
Line Of Credit Facility, Credit Terms 30 days    
Other Related Parties [Member] | Maximum [Member]
     
Related Party Transaction [Line Items]      
Line Of Credit Facility, Credit Terms 90 days    
Other Related Parties [Member] | Minimum [Member]
     
Related Party Transaction [Line Items]      
Line Of Credit Facility, Credit Terms 45 days